Symmetry Enforced Fermi Surface Degeneracies Observed in Time-Reversal Symmetry-Breaking Superconductor LaNiGa${}_2$

Matthew Staab, Robert Prater, Sudheer Sreedhar +11

LaNiGa${}_2$ is superconductor that breaks time-reversal symmetry in the superconducting state without any known nearby magnetism. Recently, single crystals of LaNiGa${}_2$ have been s…